<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

    <button id="btn1">show jquery load server1</button>
    <button id="btn2">show jquery load server2</button>
    <button id="btn3">show jquery load server3</button>

</body>
</html>